A Particular Telescope Is Set Up to Use the Coudé

question 299

Multiple Choice

A particular telescope is set up to use the coudé focus.Which arrangement of mirrors is used to bring the light to this focus?

• A) a curved primary mirror followed by a series of plane and curved mirrors that channel the light to a remote and fixed location
• B) a concave primary mirror followed by a convex secondary mirror that reflects light through a hole in the primary mirror
• C) a concave primary mirror followed by a concave secondary mirror that reflects light through a hole in the primary mirror
• D) a concave primary mirror and a flat, diagonal secondary mirror mounted at a 45° angle to the telescope axis

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